| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning device for stably carrying out control of liquid equalization and excessive coolant treatment during heating. SOLUTION: In the air conditioner having a plurality of outdoor units 1a, 1b composed of at least compressors 2a, 2b, outdoor heat exchangers 4a, 4b, and accumulators 5a, 5b, flow regulating valves 5a, 5b for regulating a coolant amount flowing into each outdoor unit 1a, 1b are respectively equipped between common liquid piping 11 and each outdoor heat exchanger 4a, 4b of each outdoor unit 1a, 1b. It includes a controller 14 determining whether or not degrees of superheat of outlet sides of the outdoor heat exchanger 4a, 4b of the outdoor units 1a, 1b are within a range wherein a certain value is an upper limit, determining whether degrees of discharge superheat of the compressors 2a, 2b are within a constant range, and regulating openings of the flow regulating valves 5a, 5b such that the degrees of superheat of outlet sides of the outdoor heat exchangers 4a, 4b are within the range and the degrees of discharge superheat of the compressors 2a, 2b are within the certain range on the basis of a combination of determination results. COPYRIGHT: (C)2011,JPO&INPIT
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